Molecular orbital diagram of CO and NO

1. ENERGY C 2s 2p atomic orbital O 2s 2p atomic orbital 4σ CO 2σ 1σ 3σ 2𝚷 1𝚷 molecular orbital C (Z=6) [He], 2s2,2p2 O (Z=8) [He], 2s2,2p4 Molecular energy diagram for carbon monoxide (CO)

2. ENERGY O 2s 2p N 2s 2p atomic orbital atomic orbital NO 2σ 1σ 3σ 4σ 2𝚷 1𝚷 molecular orbital N (Z=7) [He], 2s2,2p3 O (Z=8) [He], 2s2,2p4 Molecular energy diagram for nitric oxide (NO)